Composition for treating paper.



ALEXANDER W. HARRINGTON, 0F BROOKLYN, NEW YORK.

COMPOSITION FOR TREATING PAPER.

Specification of Letters Patent.

Patented June a, rare.

No Drawing. Application filed June 26, 1906, Serial No. 323,459. RenewedOctober 15, 1909. Serial No.

To all whom it may concern:

Be it known that I, ALEXANDER W. I'IAR- RINGTON, a c1t1zen of the UnitedStates, and

a resident of Brooklyn, Kings county, New

York, have invented new and useful Improvements in Composition forTreating Paper; and in order that those skilled in the art mayunderstand and practice my invention I give the following specification.

My invention relates to the treatment of paper with a view to producinga product possessing the properties and characteristics of parchment,the object of my invention bemg to produce in a simple, practical andeconomical way a so-called parchment paper which is impervious andresistant to water, grease and other fluids, and which possesses a muchgreater degree of toughness and strength than ordinary paper.

My invention further consists in the composition, of and the processemployed for obtaining the results mentioned.

In carrying out my invention I prepare a composition of the followingingredients, or their equivalents, viz: waxy material, preferably Whiteleaf wax, 200 lbs.; oil, preferably Russian oil, 1 gal; cloves, 1 1b.;glue, 60 lbs.; formaldehyde, 1 oz.; glycerin, 1 oz.; amylaceousmaterial, preferably cassava, 4:0 lbs.

The proportions specified above are given merely as illustrative and toserve as a guide It being understood that the amounts of the variousmaterials may be changed according to circumstances in the judgment ofthe skilled o erator. The ingredients above mentione I- have found togive satisfactory results but it will be understood that equivalents maybe substituted without departing from the invention.

In order to prepare the composition, I proceed as follows: About sixparts of water are added to the cassava, and the mixture boiled. Afterboiling the mass is cooled and the glue is then added and the mass thenralsed to a temperature of about 180 F. To the mass is then added thewhite leaf wax, the Rusian oil and the cloves. The Russian oil referredto is a refined petroleum product having a specific gravity of about.823. The cloves are incorporated in the mixture by placing the same ina bag. and allowing it to remain in the composition until the latter iscooled. The mass is now "cooled and the formaldehyde and glycerin arethen added. Duringthe preparation of the composition, the ingredientsare carefully mixed to roduce a uniform product.

The composition may be applied to the paper in any desired manner. Thenature of the composition is such that it may be applied to paper at anystage of its manufacture so that the paper may be treated with thecomposition while on the paper making machine by leading the paperthrough the composition, or otherwise ap plying it thereto at a pointintermediate the press rolls and the delivery end of the machine.Ifdesired, the composition may be mixed with the pulp before theformation 'into paper or sprayed on the paper while it is on the mold orwire. Paper treated ac- .cording to my invention, in any of the waysspecified, is materially strengthened, its texture improved, and isrendered impervious and resistant to water, oils and grease of allkinds, and resembles, in all respects, good parchment, and may beemployed for any purposes for which parchment or parchment paper isordinarily used.

Whereas in setting forth the ingredients of my composition, I. havespecified waxy material and oil, the best results are secured by the useof the specific ingredients white leaf wax and Russian oil in thecomposition, the product obtained by the use of these inredients beingsuperior to that obtained when substitutes for these ingredients areemployed.

Having thus described my invention, the

following is What I claim as new therein and desire to secure by LettersPatent:

1. The herein described composition, consistin of waxy material, oil,cloves, glue, forma dehyde, glycerin and amylaceous material.

cloves, 1 1b., glue, 60 lbs, formaldehyde, 1 Waxy material, oil andcloves, cooling and oz., glycerin, 1 oz., and cassava, 40 lbs. adding tothe mixture formaldehyde and 4. The herein described process, whichglycerin. consists in heating amylaceous material in 5 water to boiling,cooling, adding glue to the Witnesses:

mass, and heating to a temperature of about WILLIAM P. HAMMOND, 180 F.,adding to the heated mixture a H. C. WOBKMAN.

ALEXANDER W. HARRINGTON.

